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园艺学报 ›› 2014, Vol. 41 ›› Issue (2): 343-348.

• 研究报告 • 上一篇    下一篇

辣椒转录组SNP挖掘及多态性分析

刘 峰1,3,谢玲玲2,弭宝彬1,欧阳娴1,茆振川3,邹学校1,*,谢丙炎3,*   

  1. (1湖南农业科学院蔬菜研究所,长沙 410125;2湖南农业科学院西瓜甜瓜研究所,长沙 410125;3中国农业科学院蔬菜花卉研究所,北京 100081)
  • 收稿日期:2013-08-15 出版日期:2014-02-25 发布日期:2014-02-25

SNP Mining in Pepper Transcriptome and the Polymorphism Analysis

LIU Feng1,3,XIE Ling-ling2,MI Bao-bin1,OUYANG Xian1,MAO Zhen-chuan3,ZOU Xue-xiao1,*,and XIE Bing-yan3,*   

  1. (1Institute of Vegetables,Hunan Academy of Agricultural Sciences,Changsha 410125,China;2Institute of Wa-termelon and muskmelon Hunan Academy of Agricultural Sciences,Changsha 410125,China;3Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences,Beijing 100081,China)
  • Received:2013-08-15 Online:2014-02-25 Published:2014-02-25

摘要: 利用SNP分析软件从辣椒(Capsicum annuum L.)251 068条Unigenes中筛选出18 159个SNP,其中有1 781个SNP位点被匹配在1 291个注释基因上,基因功能分类和代谢途径分析表明,其中有853个基因参与初生代谢(28.7%)、细胞代谢(17.3%)、生物合成过程(15.7%),另有125个(9.7%)基因序列参与新陈代谢途径,53条(4.1%)序列参与次生代谢产物合成途径,31条(2.4%)序列参与植物激素合成途径。 EST-SNP序列中4 172条(22.9%)满足设计CAPS引物条件,为了验证EST-SNP正确性,并选取了15对CAPS引物对5份辣椒材料进行扩增,结果发现有8对(53.3%)引物表现出多态性。表明筛选出这些EST-SNP标记可作为辣椒基因分型、图谱构建等的候选分子标记。

关键词: 辣椒, 转录组, EST-SNP, CAPS

Abstract: In this study,we investigated 251 068 unigenes from two transcriptome in pepper(Capsicum annuum L.)using SNP finding soft. In total,18 159 SNP were identified from these SNP-containing unique ESTs. Among,1 781 SNP located at 1 291 annotation genes,analysis of GO(Gene Ontology)showed that 853 ESTs were classified,among primary metabolic process(28.7%),cellular metabolic process(17.3%),biosynthetic process(15.7%)being main. In KEGG map,125 ESTs involved in taken part in metabolic pathways,and 53 participated in biosynthesis of second metabolites,and 31 involved in biosynthesis of plant hormones. Moreover,a total of 4 172(22.9%)sequences were successfully designed primers of CAPS marker. Eight out of 15 primer pairs selected at random showed polymorphism among 5 different pepper varieties. The results indicated that those CAPS markers from EST-SNP will be more usable in map structure,analysis of genetic polymorphism in pepper.

Key words: pepper, Capsicum annuum L., transcriptome, EST-SNP, CAPS

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